????過去十年貶值近1/3的美元近月來閃現(xiàn)出了些許往日的光彩,。由于擔(dān)心歐債危機可能演變成一場全面的災(zāi)難，驚慌的投資者重返美元,。但要當(dāng)心,，很多專家認(rèn)為這一輪美元上漲只是弱勢美元走勢的短暫反復(fù)，而弱勢美元走勢可能還會持續(xù)多年,。因此,，他們建議美國人至少要有一部分儲蓄是基本面更穩(wěn)健的外匯。

????沒錯,，目前美元仍被視為全球“避風(fēng)港”貨幣,。但一些根深蒂固的問題正在削弱美元的這一地位。美國聯(lián)邦赤字和債務(wù)負(fù)擔(dān)在急劇膨脹,。美國與新興國家的貿(mào)易失衡持續(xù)擴大,。同時，為刺激經(jīng)濟(jì)增長,，美國聯(lián)邦儲備委員會（Federal Reserve）事實上一直在印發(fā)新鈔,，稀釋了存量美元的價值?！懊绹旧弦呀?jīng)破產(chǎn),，”波士頓大學(xué)（Boston University）經(jīng)濟(jì)學(xué)教授勞倫斯?克特里考夫表示?！拔翌A(yù)計假以時日,，美元將大幅下跌?！?/p>

????為對沖美元可能下跌風(fēng)險,，美國人不妨可將約5%的存款換成外匯。最安全的策略是購買一籃子外匯,。通過這種方式,，可避免突然受到某一個國家政治或經(jīng)濟(jì)措施的沖擊。例如,，近幾周由于日本和瑞士政府入市阻止本幣升值,，日元/美元和瑞士法郎/美元均出現(xiàn)了大幅下跌,。

????要建立外匯頭寸，簡單的做法就是在投資外匯的幾十支交易所交易基金（ETF）中挑選一支,。比如The PowerShares DB U.S. Dollar Index Bearish,。晨星（Morningstar）ETF分析師邁克爾?勞森稱，這支基金跟蹤一籃子發(fā)達(dá)國家貨幣兌美元匯率的表現(xiàn),，可以作為投資組合內(nèi)“便宜的對沖工具”,。

????另一個值得考慮的、成本相對較低的選擇是投資外國公債的ETF,。除了美元下跌能帶來資產(chǎn)升值之外,，還能獲得一些固定收益。比如WisdomTree Emerging Markets Local Debt,，它跟蹤由中國,、巴西、韓國等15個新興國家的公債組合,。

????或者,，干脆就把一部分錢存入提供外匯投資的一家美國銀行賬戶。例如美國多元化金融服務(wù)公司EverBank就提供以一籃子外匯計價的短期存單,。這些存單由美國聯(lián)邦存款保險公司（FDIC）提供保險，按照相應(yīng)國家的通行利率支付利息,。此外,，EverBank還提供外幣存款賬戶,。

????美元持續(xù)下跌并非鐵定無疑,。但鑒于這樣的下跌會對居民的儲蓄購買力帶來的影響,，先將一小部分錢轉(zhuǎn)為外匯是明智的保險措施,。

????Janice Revell曾經(jīng)擔(dān)任薪酬顧問,，2000年起開始撰寫個人金融類文章。

????After shedding almost a third of its value over the past decade, the U.S. dollar has exhibited a few sparks of its former glory in recent months. Spooked investors have moved back into the greenback amid fears that Europe's debt crisis could turn into a full-blown meltdown. But beware, say many experts: The surge is merely a blip in a weak-dollar trend that still has years to run. And that argues for parking at least a modest portion of your savings in foreign currencies with more solid fundamentals.

????To be sure, the dollar is still viewed as the world's "safe haven" currency. But deep-rooted problems are undercutting its status. The federal deficit and debt burden are ballooning. Trade imbalances with emerging countries are gaping wider. Meanwhile, to spur growth, the Federal Reserve has effectively been printing new money, diluting the value of each existing buck. "The U.S. is basically bankrupt," says Laurence Kotlikoff, an economics professor at Boston University. "I think we'll see a major decline in the dollar over time."

????To hedge against the possibility of a falling greenback, consider putting about 5% or so of your savings into foreign currencies. The safest strategy is to buy a basket of currencies. That way you avoid being blind-sided by the political or economic agenda of any one country. In recent weeks, for instance, both the Japanese yen and the Swiss franc have taken sharp hits against the U.S. dollar after the governments stepped in to prevent their currencies from appreciating.

????A simple way to establish a foreign currency position is through one of the dozens of exchange-traded funds devoted to currencies. The PowerShares DB U.S. Dollar Index Bearish (UDN), for example, tracks the performance of a basket of developed-country currencies against the U.S. dollar and can serve as a "cheap hedging instrument" within your portfolio, says Michael Rawson, an ETF analyst with Morningstar.

????Another relatively low-cost option worth considering is an ETF that specializes in foreign government bonds. In addition to capturing any price appreciation if the dollar weakens, you'll also reap some income. For instance, WisdomTree Emerging Markets Local Debt (ELD) tracks a portfolio of government bonds from 15 emerging-market countries, including China, Brazil, and South Korea.

????Or you could simply park some of your money in a U.S. bank account that offers foreign currency investments. EverBank, for example, offers short-term certificates of deposit denominated in baskets of foreign currencies. The CDs are FDIC-insured and pay interest based on the rates prevailing in each relevant country. EverBank also offers deposit accounts in foreign currencies.

????A sustained drop in the U.S. dollar is not a sure bet. But given the impact that such a decline would have on the purchasing power of your savings, moving a little money into foreign currencies is a sensible insurance policy.

????A former compensation consultant, Janice Revell has been writing about personal finance since 2000.